<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31301843</termId><termName>silver mirroring</termName><termType>PT</termType><termNote><![CDATA[ A symptom of oxidative-reductive deterioration in photographs. ]]></termNote><termCreatedDate>2026-03-30 20:21:08</termCreatedDate><relation><relationType>UF</relationType><termId>31301844</termId><termName>mirroring, silver</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31301845</termId><termName>silvering-out</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298256</termId><termName>conditions and effects for photography</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31326339</termId><termName>photographs</termName><termType>PT</termType></relation></term>  </Zthes>